Free Dictionary vs Wolne Lektury

Same instrument, two spec sheets — measured, not claimed.

Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms
P95 · ms
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseContent under source licenses (CC BY-SA 4.0 seen on entries)Works are public domain or on free/Creative Commons licenses (per WolneLektury); API terms not formally stated
Free tierFree — limits not publishedFree — limits not published
Rate limit450 req/window · 417 remaining · resets 1783512354Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Free Dictionary vs Wolne Lektury: common questions

Which is more reliable, Free Dictionary or Wolne Lektury?

On our scheduled checks, Wolne Lektury leads on measured uptime — Free Dictionary at —% versus Wolne Lektury at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Free Dictionary and Wolne Lektury need an API key?

Neither needs a paid key — Free Dictionary is callable with no signup, and Wolne Lektury is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Free Dictionary and Wolne Lektury from the browser?

Yes — both Free Dictionary and Wolne Lektury send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Free Dictionary and Wolne Lektury free for commercial use?

Free Dictionary has unclear commercial terms, and Wolne Lektury has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.